A term of endearment used by algebraic topologists when talking about their favorite power tools such as Abelian groups, bundles, homology groups, homotopy groups, K-theory, Morse theory, obstructions, stable homotopy theory, vector spaces, etc. Gadgets are sometimes also called algebraic gadgets.

# Gadget

## See also

Abelian Group, Algebraic Topology, Bundle, Free, Homology Group, Homotopy Group, K-Theory, Obstruction, Morse Theory, Vector Space## Explore with Wolfram|Alpha

## References

Page, W.*Topological Uniform Structures.*New York: Dover, 1994.

## Referenced on Wolfram|Alpha

Gadget## Cite this as:

Weisstein, Eric W. "Gadget." From *MathWorld*--A
Wolfram Web Resource. https://mathworld.wolfram.com/Gadget.html